<template>
  <div>
    <h3 style="text-align: center">流量告警类型</h3>
    <div id="WarningChart" style="width:90%;height:300px;"></div>
  </div>
</template>

<script>
export default {
  name: 'WarningChart',
  data () {
    return {
      myChart: {}
    }
  },
  mounted () {
    this.chartInit()
  },
  methods: {
    chartInit () {
      this.myChart = this.$echarts.init(document.getElementById('WarningChart'))
      let option = {
        tooltip: {
          trigger: 'item',
          formatter: '{a} <br/>{b} : {c} ({d}%)'
        },
        legend: {
          orient: 'vertical',
          right: '10%',
          top: '18%',
          data: ['直接访问', '邮件营销', '联盟广告', '视频广告', '搜索引擎']
        },
        series: [
          {
            name: '访问来源',
            type: 'pie',
            radius: '60%',
            center: ['50%', '40%'],
            data: [
              { value: 335, name: '直接访问' },
              { value: 310, name: '邮件营销' },
              { value: 234, name: '联盟广告' },
              { value: 135, name: '视频广告' },
              { value: 1548, name: '搜索引擎' }
            ],
            itemStyle: {
              emphasis: {
                shadowBlur: 10,
                shadowOffsetX: 0,
                shadowColor: 'rgba(0, 0, 0, 0.5)'
              }
            }
          }
        ]
      }
      this.myChart.setOption(option)
    }
  }
}
</script>

<style scoped>

</style>
